Oh, I'm sorry you had to face that issue. We'll try to fix this in our upcoming builds. Thank you for playing!
Viewing post in Cumulus - Together In The Clouds jam comments
having played a few other Unity based submissions, it appears to maybe be an issue with either the newest wine (the thing with which you can run windows programs on Linux/Mac/BSD/etc) or the newest Unity versions; since it happened with a few of the other ones as well.
Anyway, if there's anything I can do to help investigate / fix the issue let me know ^^